Pressure regulator and cut-off



Jan. 20, 1931. R. G. HE'DDEN 1,189,746

PRESSURE REGULATOR AND CUT-br? Filed Jan. 25. 1929 INVENT'oR Patented .Janl 2o, '1931 UNITI-inI STATES RAY e. Hannan,A onnoLLYwoon, cnnrromar.A

i rnnssnnn nneua'ronann CUT-cnn I Application led January 25, 1929. Serial No. 334,992.`

This invention has particular relation to l gauges of the pressureindicating type primarily designed for use. in the iniiat-ingof pneumatic tubes and the like. 5 An nozzle for the rgauge to facilitate application of same uponthe valve stems of pneuA matic'tubes.

Another object of the invention vcontem-` plates an'adjusting apparatus for the gauge whereby the same may be set to desired pressure commensurate 'with the amount. of 'polids pressure desired in the particular An additional objectof 4the invention con. sistsin the provision of a cut oif mechanism operable in conjunction with the gauge to cut olf the supply of air to the tube when the latter has been filled to the pressure indi-A cated by the gauge. .v

With the above and other objects in view, the invention further consists of the following novel features and details of construction, to be hereinafter more full described,

illustrated in the accompanying rawing an pointed out in the appended claims.

In the drawing Figure 1 is .an end elevation of the inven- Figure 2 is a sectional view of the entire apparatus.

. Referring to the drawing 'in detail, wherein like characters of reference denote corresponding parts, the reference character 10 indicates a tubular member having a closure cap 11 'suitably arranged and secured to the outermost end thereof in the manner shown in Figure 2 of the drawin A guide sleeve 12,

f outwardly projecting m the horizontal center of 'the closure cap 11, is adapted to journal the adjacent portion of an adjusting shaft 13 therein having a knurled or ser rated head .14 upon its outermost end. The

adjusting shaft is held against displacement 5 within the sleeve 12 by a. stopcollar 15 carried thereby within the tubular Amember 10 and engageable with the inner side of the closure cap' 11. The innermost projectin'g'portion p .of the adjusting shaft 13 is tapped and threadedly engaged 'with a nut 16 carried object of the invention comprehends a* uponll the outer closedV en d of atl-.substantially inverted cup-shaped member v17. A plungei'-va1ve 18 lidably mounted with,

in the opposite and open end of the substantially inverted cup-shaped member 17 is 55.

' adapted for engagement with the adjacent end of a compression spring- 19 sprung at its opposite end convolution a ainst the 4inner sideJ of the 'closed end wall 0 the`substantialy Inverted cup-shaped member V'17 whereby 6o 1 tile reduced extension 20 of the plunger. valve 18 will be normally induced tooccupy the Figure 2 position, that is, against the wall 21 to close a valve port 22 therein. The wall 21 forms the opposite end wall of the tubular 'G5 member 10. A nozzle 23, carried-by and projecting from the` lowermost portlon of the tubular member 10, and in communication with the bore thereof, is adaptedfor op'- erative connection with Valve stems of the '10 conventional type through Contact of a stationary lug 23' therewith, commonly employed upon the tubes for pneumatic tires.

The tubular member 10, is in addition,

d provided with an elongated sight opening 24 'l therein through which calibrations or other lindicia included uponthe outer wall of the substantially inverted cup-shaped member 17 are visible and which correspond Ato'the .pounds pressure carried by the -tubes of `8oneumatic tires of diii'erent sizes, types and a esigns. .Adjustment o f the shaft 13 through the instrumentality: of the knurled orf'ser'rated knob 14 upon the outermost projecting end thereof will shift the substantial# 1y inverted cup-shaped member 17 within ythe tubular member 10 to dispose a particular calibration or other le end u on thefouter wall lof the substantlallyl inverted cupshaped member 17 adjacent the lower end of 90 the elongated slot 24`in the tubular member 1.0,substantia1ly as ,illustrated in Figure 1 of ny drawing. Y 'A housing 25, carried by and formed as a continuation of the wall 21, terminatesto D5 provide a neck 26 upon one end' for connection with whose, not shown; from 'a comvA fulcrum lever 27, eccentrcally mounted, as at. 28,in spaced .relation to one `side' ofthe 100 wall 21 diametrically opposed tothat of the vzo reduced/extension 20 of the plunger valve 18,'

terminates to provide a valve head 2 9 right .angularly disposed uponothe shorter end thereof and arranged for disposition within the seat 2.2.- A

Arelease shaft 30,-extended through a 'packing gland 31 in the Wall of the housing 25, is provided with a bifurcated portion 32 upon ,its innermost end and having pivotal connection'with the longer end of the fulcrum lever 27.

'A piston 33, mounted for sliding movement Within a'cylinder V34 carried by the,

be presently apparent.

'edges-0I' the .sight opening Av closure plate 39, removably nsecured t upon the housing 25, will permit access to the 30 fulcrum rod an sired.

As shown in Figure l Aof my drawing,

adjacent fittingswhen devstuds or pins, .such as indicated at 40, outwardly projecting from the outer wall of the 'substantial y inverted cupshaped 'member 17, are disposed adjacent 'the opposite side or slot 24; in the tubular member 10. where y the.l calibrations or other legends upon the adjacent visible portion of the inverted vcup-shaped member' will be constantly aligned.

`With'the improved. type of tire iniating and cu'toff gauge applied tothe tube or pipe line leading from the ordinary compressor` type of engine, as commonly employed in garages and stations as -a convenience to theY motoring world, the adjusting shaft is regulated by the lmob 14 therefor to reg- The nozzle projecting lster a desired calibration upon the outer wall -of the substantially inverted cupshaped member 17 with the aforementioned A d f v A en o the sight opening or slot 24 1n the tu member, and a piston operable .tl than cylinder and having connection with the' lever 12o bular member 10. SaidA calibration or legend is adapted to correspond with the number of poinds pressure of air required by a pneumatic tire of a certain size and type.

member and housing is then fitted upon' the valve stem of the pneumatic tube, and which,

due vto the construction thereof, automatical- Y1y opens the valve inside -of the valve stem.

The release Ashaft l30 is then grasped and e wma elected for an appreciable distance through.

the housin 25 to unseat the valve 29 from the seat 22 1n the end Wall 21.

The pressure of air ,through the neck 26 and Within the housing 2 5 therefor will then pass through the port 22 and elevate the reduced extension and plunger valve 18 by the pressureand pass' through the nozzle and valve ste'm into the tube. VVhen a certain pressure, or at least, a number of pounds pressure equivalent to that exhibited by the particular calibration upon the gauge, is

reached Within thentube, back pressure willl then occur within the vaive stem and nozzle and retract therethrough. Such action Wlll of thepiston 33 will retract same-within the cylinder 34 and which', due to the engagement of the connecting rod 36 therefor with the fulcrum lever 27, the latter will be caused' to shift upon the pivot 28 therefor and seat the valve head 29 carried upon tb'e shorter end thereof Within the seat 22 in the wall 2l Y whereby the air pressurefrom the compres-f sor engine Will be shut otl' from the pneumatic tube.

-The invention is` susceptible of various changes in its formrproportions and minor details of construction, and the right is herein reserved'to make such changes as properly fall within the scope of the appended claims.l

Having thus described'the invention,- what is claimed is z-f 1. A cut-oif valve comprising a. housing including a tubular member, a wall separating the adjacent portions of the housing and tubular member including va va1veport, a

fulcrum lever eccentrically mounted within the housing including a valve head upon one end seated within the valve port, a compression spring .including within the tubular member, a plunger valve slidably mounted in conjunction with the spring within the tubu- -lar member' and adapted to normally dispose.

one end thereof over the valvel port and the housing in communication. with the `gauge to automatically close the -valve headlupon theoccasion of the plunger valve being defrom the .tubular 'ped lagainst said valve head, a cylinder. carried byl 2. cut-olf valve vcomprising a housing v including a tubular memberya vwall separat# ing` the adjacent portions of thel housing and tubular member including a valve port,`a fulcrum lever eccentrically mounted within the housing including a valve head upon one laov ber', a plunger valve slidably mounted in conjunction with the spring Within the tubular member and adapted to normally dispose one 'end thereof over the valvefport and against the valve head, a cylinder carried by the housing, a piston operable 'within the cylinder having connection with the fulcrum lever, and a reduced extension carried-by the plunger valve producing a shoulder portion,-

thereon to facilitate elevation of same 'to retract said piston and automatically, close the valve head.

3. A cut-olf valve comprising a housing including a tubular member, avwall separating the adjacent portions of the housing and tubular member including a valve port, a

fulcrum lever eccentrically mounted within the housing including 4a valve head' upon A one end'seated within the valve port and projecting for an appreciable distance within the tubular. member, a compression spring` A included Within the tubular member', a plun ger valve slidably mounted within the tubular member against the tension of the spring and having contacting engagement at its'opposite end with the protruding portion of the valve head, a" cylinder carried byv the hous- .ing and having communication adjacent its top with the interior of the tubular member adjacentl said plunger valve, a piston oper-v able within the cylinder having connection with the fulcrum lever, and a reduced exten# sion carried by the plunger valve producing a shoulder portion to facilitate elevation of the plunger valve, retracting of said piston and automaticseating of the valve head.-A

In testimony whereof I aix my si RAY' G. HED EN.

ature. 

